Danny Pintauro revealed he's HIV-positive on an all-new episode of Oprah's "Where Are They Now?" on Saturday.

"I wanted to tell you this a long time ago, but I wasn't ready. I'm ready now," he revealed, holding back tears. "I'm HIV positive. I have been for 12 years, and it's just a big deal. You know? It's not something that people are talking about, really."

"When I first came out, which was before everybody -- I mean, Ellen and I came out the same year. Rosie came out four years after I did -- I missed the opportunity to be a beacon of light for gay kids who were going through what I was going through," he tells Winfrey.

Not only did Pintauro open up about the heart wrenching struggles that come with being diagnosed HIV-positive, the 39-year-old former child actor also discussed the epidemic of crystal meth use within the gay community.